Hi all,

I'm trying to use some OpenType font features for the first time, and I've run into a problem. Basically, I purchased a font (Samantha Pro) with a ton of extra alternates, swashes, ligatures, etc.—but I have no idea how to find these extra characters in the font itself. I think understand the syntax for font-feature-settings (after reading up on it here, here, and here), but I can't figure out to actually find the extra characters in the font itself.

As an example:

The Samantha Pro font contains a number of alternate "O" characters. It's my understanding that in order to access one of these alternates, my CSS should look something like this:

/* enable style set five */
.alternates {
    -moz-font-feature-settings: 'ss05=1';
    -ms-font-feature-settings: 'ss05' 1; 
    -webkit-font-feature-settings: 'ss05' 1; 
    -o-font-feature-settings: 'ss05' 1;
    font-feature-settings: 'ss05' 1;
}

But how do I find out which style set is associated with which character? Is there some program I can use? How does one browse the style sets associated with a particular font (short of just trying random numbers until something works)?

Thanks in advance for any help.